The M.Sc. Thesis submitted by Mrs. Salma Ahmed Abdeen, Plant Protection  -Department, entitled: "Efect of some insect Growth Regulators on the cotton leafworm, spodoptera littoralis(Boisduval) " . Under supervision of: 1.  Prof. Hosam El-Din Abdel-Rahman 2.  Dr. Gamal Abdel-Latif Mohamed 3.   Dr . Mohamed Ahmed Ibrahim   Approved BY: 1. Prof . Youssef Awad Darwish Younis 2. Prof : Hosam El-Din Abdel-Rahman 3. Dr : Sherif Abou El Qasim Ahmed 4. Dr : Mohamed Ahmed Ibrahim Would be discussed on Sunday 19/3/2017 at 10.00 o’clock, in Hall attached at the Conference Hall